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采用超声萃取-层析净化-气相色谱/质谱联用仪定量分析塑胶跑道中7种有机磷酸酯(OPEs),方法回收率为71.41%~110.58%,标准曲线相关系数r>0.99,质控良好.采集并分析了成都市12个学校内的塑胶跑道样品中OPEs的含量及分布.结果表明2/3学校内的塑胶跑道样品中检出了OPEs,其中磷酸三正丁酯[tri-n-butyl phosphate,TnBP]、磷酸三异辛酯[tris(2-ethylhexyl)phosphate,TEHP]的检出率较高,而磷酸三(2-氯乙基)酯[tri(2-chloroethyl)phosphate,TCEP]、磷酸三(1,3-二氯异丙基)酯[tridichloropropyl phosphate,TDCPP]、磷酸三苯酯[triphenyl Phosphate,TPh P]在所有样品中均未检测到.Σ7OPEs含量范围为ND~534.89 ng·g~(-1),其中单体含量最高的是TnBP(ND~462.18 ng·g~(-1)).一个样品中检出了毒性较大的氯代磷酸酯-TCPP[trichloropropyl phosphate],含量为205.94 ng·g~(-1).成人和儿童通过皮肤接触摄入的Σ7OPEs日均暴露剂量(以bw计)最高,分别为0.14 ng·(kg·d)~(-1)和0.64 ng·(kg·d)~(-1),儿童的日均暴露剂量明显高于成人.成人及儿童的风险熵值(RQ)为10~(-7)~10~(-5).建议政府对塑胶跑道中OPEs使用量及添加种类进行管控,以更好地保护人群健康.
Seven kinds of organic phosphate esters (OPEs) in plastic track were quantitatively analyzed by ultrasonic extraction-chromatography-gas chromatography-mass spectrometry (GC-MS / MS). The recoveries were 71.41% -110.58%. The correlation coefficient of calibration curve was> 0.99. The content and distribution of OPEs in plastic runway samples in 12 schools in Chengdu were collected and analyzed.The results showed that OPEs were detected in plastic runway samples in 2/3 of the schools and tri-n-butyl phosphate [tri-n- Butyl phosphate (TnBP) and tris (2-ethylhexyl) phosphate (TEHP) were higher in detection rate. However, the detection rate of tris ], Tridichloropropyl phosphate (TDCPP), triphenylphosphate (TPh P) were not detected in all samples.The content of Σ7OPEs ranged from ND to 534.89 ng · g ~ (-1), the highest monomer content was TnBP (ND ~ 462.18 ng · g ~ (-1)). One of the most toxic monomers was chlorpyrifos-trichloropropyl phosphate ], And the content was 205.94 ng · g -1 .The daily average exposure dose (in bw) of Σ7OPEs by skin contact between adults and children was the highest (0.14 ng · (kg · d (-1) and 0.64 ng · (kg · d) -1, the average daily exposure dose of children was significantly higher than that of adults.The RQ of adults and children was 10 ~ (-7) ~ 10 ~ (-5) .It is suggested that the government control and control the amount of OPEs used in plastic runways and the types of additives so as to better protect the health of the population.